setting default DateTime control

[Stevish]

Hello!

I have two dateTime controls, one for a start date of search and one for end date. I'm using the dates to search
file creation dates and then storing them into a array. I would like to have the search include all files if a dateTime
is not picked. Any suggestion about how to do this? Can you do it in the get; set ; ?

     public DateTime startDate
        {
            get { return startDate; }
            set { startDate = value; }
        }
        public DateTime endDate
        {
            get { return endDate; }
            set { endDate = value; }
        }

Thanks for your time in this for me

Stevish